Unit for heating and ventilating systems.



J. M. FRANK. UNIT FOR HEATING AND VENTiLATING SYSTEMS.

APPLICATION FILED 1AN.9. 1918.

Patented Feb. 25, 1919.

1,295,151. fig] fwezzl of JOHN M. FRANK, OF CHICAGO, ILLINOIS, ASS IGNOR TO ILG- ELECTRIC VENTILATING- COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF LOUISIANA.

UNIT FOR HEATING AND VEN TIIQIATIN G SYSTEMS.

I To all whom it may concern.-

This invention shops, offices and that the Be it known that I, JOHN M. FRANK, a citizen of the United States, residing at Chicago, in the county of Cook and State of. Illinois, have invented certain new and useful Improvements in Units for Heating and Ventilating Systems, of which the following is a specification. has reference to heating and ventilating systems for factories, worksimilar large buildings of that general type wherein warm air is forced directly into the room to be heated and ventilated, this type of heating being commonly known as blast heating. In ordinary blast heating installations, where the air is brought in through pipes, good practice places a limit of eet per minute as the speed through the pipes, on account of friction; and conse quently a great deal of piping is needed to secure. proper distribution for the reason air can not be thrown a very great before it rises to the ceiling. A

piping means distance large amount of as a large expense for installation.

y present invention is designed as an improvement in heating and ventilating sy s terns of this general character or type and among the objects sought by the invention ,more efficient distribution of delivered into the room resulting from a,-

mentioned, a considerable reduction power consumption, a better and the warm air may be in the higher speed of flow, ease and chea ness of installation resulting able character of the units, and capability of use either in a'heating system alone or in a ventilating system alone or in a combinedheating and ventilating system.

Other objects and advantages as secured by the invention will be readily apparent to those skilled in the art from the subable embodiment of whereininstallation of a proved heating un1ts'as applied to a work- 'shgp and an adjoining oflice; I

joined description when taken in connection with the accompanying drawings wherein I have illustrated one practical and-workplan view of one practical Figure 1 is .a

system employing my 1mig; 2 is a side. elevation, partly broken Specification of Letters Patent.

about 1,200 lineal its front and rear ends.

a great deal of power lost constantly in friction, as Well, verse partition 15,

fan being mainly from t e portlater patent the invention, and

blast, for which 7 Patented Feb. 25, 1919.

Application filed January 9, 1918. Serial No. 211,064.

away, of one of the units shown as suspend- Fig. 4 is a front elevation, with the deflector plate broken off.

Fig. 5 is a horizontal section of a unit shown as applied to a side wall of the room and designed for both heating and ventila tion or for recirculating and warming inside air alone; and

Fig. 6 is a side elevation of the structure shown in Fig.- 5.

Referring to the drawings and first describing the heating unit itself, this comprises a rectangular sheet metal casinghaving a top wall 10, a bottom Wall ll-and side walls 12, the casing being open at both In the rear end of radiating eleone or more diagramn1ati the casing is mounted a heat ment which may consist of steam coils or radiator stacks cally indicatedat 13. In the of the casing is mounted a propeller-fan 14 that occupies-a circular opening in a transconsiderably smaller area than the area of the rear open end of the casing, an said directly driven by an electric motor conventionally shown at 16 that is provided with a protective hood or housing 17 from which leads a suction pipe 18 opening through the bottom wall 11 of the casing, the motor and fan the partition 15 by a series of radial arms 19. This combined electric motor and directdriven propeller-fan is substantially like that disclosed in Letters Patent No. 831,284: to Robert A.'Ilg, dated September 18, 1906, an improved form of which is shown in the to the same patentee 'No. 1,244,334, dated October 23, 1917, and need not herein be more particularly described. In front of the fan are a series of stationary vertical shutter strips 20 for diffusing the blast sidewise, and hlnged at 21 to the upper forward end of the casing is a depending deflector plate 22 overhanging the forward open end of the casing and designed to control. the up and down distribution of the purpose the free end of 22 is connectedby a cord the deflector plate pulley 24 with a winding 23' running over a rum 25 mounted said opening having a' on the side wall of the.

front portion A 1 being supported from;

- casing and adapted to be manipulated manually by handle 26, the deflector plate being counterweighted by a-weight 27 interposed in the cord 23 between the pulley 24 and. the drum 25. In the position shown in Fig. 2 the deflector plate is set to direct the blast downwardly or toward the floor. When the lower portion of the room becomes adequately, heated, the deflector plate may be raised more or less by turning the handle 26 in the direction indicated by the arrow in Fig. 2 so as to direct the air blast across the room toward the side walls thereof. In one of the side walls 12 of the casing, between the heater and the fan there is an opening normally closed by a door 28. Whenever artificial heating of the air is not required, the heating elements 1.3 may be by-passed by opening the door 28 and permitting the fan to draw the air through the opening governed t ereby the air in the room.

In Fig. l I have conventionally illustrated one practical and typical installation of a system employing the units hereinabove described. In this figure 29 designates the opposite side walls of a large room such as a factory, machine shop or the like, the interior space of which is designated by 30, and at one end thereof is a smaller room designated '10 31 which may be assumed to represent 0 cc space separated from the main space by a partition 32. Extending longitudinally and substantially centrally line which may of the rooms 30 and 31 is a steam pipe line 33, while 34: may designate a return vacuum or may not be employed as I desired. Suspendedfrom the ceiling by ver- .ployed, as the conditions of any particular. .lIlStfill'afiDn may require.

scribed, these units being ceiling, they may tical extensions 35 of the casings of the heatdespacedat intervals along the steam plpe line and alternately arranged on opposite sides of the latter, the

ers are the heating units hereinabove units on one slde being designated as an entirety by A and those on the opposite side by B. In the oflice space 31 I have indicated a single unit designated by C, the

forward or delivery endfof which is equipped with a three way deflector D designed to distribute the blast both forwardly and laterally. The several heating coils or radiators 13 of the units are, of course, connected withthe steam'pipe line 33 andthe vacuum return line 34 where the latter is employed, and it will be observed that the units on one .side of the line face oppositely to those on the other side of the line, the units A. forcing the heated air toward one of theside walls 29 of the building and the units B forcing the heated air toward the opposite side all 29. As many units may, of course, be emthe units from the Instead of suspending be supported otherwise, as

for purposes of circulating- -being cheaply built and easily 'insta ciency of thereby.

from the side walls or the floor. In Figs. 5 and 6 I have diagrammatically illustrated a side wall installation opposite a window or other opening 36. In this case the rear portion of the casing is equipped with a pair of dampers such as the slides 37 and 38, the former serving to open and close the outside opening 36, and opening between the casing and the room in which it is installed. Where warmed outside air is desired the damper 37 is opened and the damper 38 closed, thus aflording ventilation. Where a mere stirring up or the latter controlling a side,

recirculation of the inside air is desired, the

damper 37 is closed and the damper 38 opened. This mode'of installation is more desirable in relatively small rooms where ventilation as well as heating may be .re--

heat is usually more important than ventila tion, and the perature at mately 60 chief object is to raise the temor near the floor to' approxilled without requiring duct work, necessitating only a minimum amount of piping. In the heating units herein shown the air may be caused to travel over the heating coils at a velocity of approximately 1,000 lineal feet per minute and leaves locity of approximately 2200 to 2400' feet per minute, thereby securing a much-greater speed of delivery or discharge and throwing the. heated air much farther before it than is possible with ordinary blast rises heating construction. To secure effective requestion' of F. The heating system herein disclosed is well adapted for such situations,

the fan at a high vesults itis quite essential that the fan be laced in front of the heating coils so as to draw the air over or through the latter, since, if the fan, were placed back of the coils and the air blown through the latter the velocityof discharge would necessarily be much lower and to that extent the efliciency of the system would be impaired. In the described arrangement wherein the heated air necessarily flows over the motor, the cooling'feature isof considerable importance and contributes largely to the eflithe apparatus by" reason of autothe temperature of matically keeping down otherwise become the motor which might overheated.

I do not limit the invention to the precise details of structure and arrangement herein disclosed, since. it is manifest that the same maybe varied in minor details without departing from the principle of the inventionor sacrificing any ofthe advantages secured I claim:

1. A heating unit of the character de scribed, comprising, in combination, a oas ing, a heat-radiating element in the rear portion of said casing, a combined motor and direct-driven propeller fan in the front portion of said casing'acting to draw air over said heat-radiatin element, said casing being open in rear of said element and in front of said motor and fan, a protective hood on said motor, and a pipe leading from; said hood to the outside of said casing and supplying a current of cooling air to said motor.

heating unit of the character described, comprising, in combination, a sheetmetalrcasinghaving topybottom and side the heated air from the open front end,

means for supporting said casing horizontally above the floor of a building to be heated, and an adjustable deflector-plate hinged to the forward end of said casin JOHN M. FRANK. 

